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Source: India is preparing an interim report, not a final one, as the anniversary of the Air India crash approaches.

Indian officials investigating the deadly Air India crash last year are not preparing a final report but rather an interim one in anticipation of the anniversary date of the 'Boeing accident which killed 260 people.

A person who spoke to the media said that the interim report of India's Aircraft Accident Investigation Bureau (AAIB) would be "more comprehensive than the preliminary report released last July" and examine possible primary cause and other contributing factors.

The preliminary report of 15 pages into the aviation industry’s deadliest accident in the last decade revealed that the Dreamliner’s engine fuel switches were flipped almost at the same time, starving the engines of fuel soon after the flight took off from Ahmedabad on June 12, 2025.

According to an early assessment by U.S. officials reported last year, a cockpit recording of the dialogue between the pilots supports the belief that the captain stopped the fuel flow to the plane's engine. At the time, the?AAIB stated that it was "too soon to draw any conclusions".

The Indian authorities are not required to inform the United States of their findings in advance by releasing an interim report. National Transportation Safety Board, which is taking part in the investigation due to the fact that the aircraft was manufactured and designed in the United States. The NTSB could comment on the final report. This would also give closure to the families of crash victims.

The final report won't be ready for the anniversary of the crash because "it's a complex investigation that takes time," said the individual. They added the interim report needed to be presented to the government authorities and the timing of the final report was still unclear.

Another source who was familiar with the situation said that investigators are still working on this investigation and need more time. Both sources spoke under condition of anonymity, as the internal workings of the investigation were private.

Internationally, the final report must be submitted within one year after an accident. However, investigations can take a long time. If this is not possible, then an interim statement is required to be released on each anniversary.

AAIB, the Indian civil aviation ministry, and Air India have not responded to requests for comment via email. AAIB Chief GVG Yugandhar did not return calls or messages seeking comments.

Consultation Process

International Civil Aviation Organization, an agency of the United Nations, sets up a process for consultation with states participating in draft final reports. The usual comment period is 30 days, but can be extended to 60. The same process is not applicable to interim statements.

The U.S. -NTSB and the Montreal based ICAO, who are supporting the investigation, have declined to comment. Boeing, which serves as a technical advisor to the investigation and is seeking comment from the AAIB, declined to make any comments.

Ethiopian investigators in the March 2019 crash of an Ethiopian Airlines 737 MAX issued a detailed interim investigation report within a month, but the 'final report' was not released until December 2022, even though the NTSB received a draft version as early as January 2021. The NTSB released a public criticism of certain aspects?of the Ethiopian Report.

LONDON FUEL SHIFT INCIDENT

Preparations for an interim Air India statement are being made in parallel with a separate investigation into fuel switches reported by pilots on a flight of the Air India Dreamliner from London to Bengaluru, February last year.

The?pilots in that incident observed that during the engine start, the fuel switches were not fixed in the "run position" on the first two tries when light vertical pressure was applied. However, they were stable on the third attempt before takeoff. The incident was reported when they landed in India.

Indian aviation officials, from the Directorate General of Civil Aviation, (DGCA), will travel to Seattle in June to observe Boeing's testing of the switches. Indian officials described the switches as "sensitive" via confidential emails.

The switch, which was at the heart of the crash investigation last year, has been brought back into the spotlight. The first person who spoke to me said that some investigators in the Air India crash investigation were unaware of the DGCA Seattle visit.

Boeing said that it "supports" Air India, and UK authorities are still investigating the incident.

The DGCA has not responded to a comment request. Reporting by Abhijith Gaapavaram, New Delhi; Allison Lampert, Montreal; editing by Aditya K.alra and Jamie Freed

(source: Reuters)